TN 12TH MATHS - Online Test
Q1. If w( x, y
) = xy , x > 0 , then ∂w/∂x is equal to
Answer : Option C
Explaination / Solution:
Q2. If z= 
, then | z | is equal to
, then | z | is equal to
Answer : Option C
Explaination / Solution:
Q3. The value of 
is
is
Answer : Option D
Explaination / Solution:
Q4. The differential equation of the family of
curves y = Aex + Be−x , where A and B are arbitrary constants is
Answer : Option B
Explaination / Solution:
Q5. According to the rational
root theorem, which number is not possible rational zero of 4x7 + 2x4 −10x3 − 5 ?
Answer : Option B
Explaination / Solution:
Q6. 
is valid for
is valid for
Answer : Option B
Explaination / Solution:
Q7. A random variable X has binomial distribution with n = 25 and p = 0.8 then
standard deviation of X is
Answer : Option D
Explaination / Solution:
Q8. The radius of the circle 3x2
+ by2 + 4bx − 6by + b2 =
0 is
Answer : Option C
Explaination / Solution:
Q9. The operation * defined by a
∗ b = ab/7
is not a binary operation on
Answer : Option B
Explaination / Solution:
Q10. If [
,
, 
] = 1, then the value of 
is
,, ] = 1, then the value of is
Answer : Option C
Explaination / Solution:
No Explaination.
